[Bug Report] selftests: arm64: build errors

[Mark Brown]

On Mon, Jun 03, 2024 at 06:28:16PM +0500, Muhammad Usama Anjum wrote:

> gcc pac.c /pauth/pac_corruptor.o /pauth/helper.o -o /pauth/pac -Wall -O2 -g
> -I/linux_mainline/tools/testing/selftests/  -I/linux_mainline/tools/include
> -mbranch-protection=pac-ret  -march=armv8.2-a
> In file included from pac.c:13:
> ../../kselftest_harness.h: In function ‘clone3_vfork’:
> ../../kselftest_harness.h:88:9: error: variable ‘args’ has initializer but
> incomplete type
>    88 |  struct clone_args args = {

This is in the generic code.

>   CC       check_prctl
> check_prctl.c: In function ‘set_tagged_addr_ctrl’:
> check_prctl.c:19:14: error: ‘PR_SET_TAGGED_ADDR_CTRL’ undeclared (first use
> in this function)
>    19 |  ret = prctl(PR_SET_TAGGED_ADDR_CTRL, val, 0, 0, 0);
> 
> gcc -mbranch-protection=standard -DBTI=1 -ffreestanding -Wall -Wextra -Wall
> -O2 -g -I/linux_mainline/tools/testing/selftests/
> -I/linux_mainline/tools/include  -c -o /bti/test-bti.o test.c
> test.c: In function ‘handler’:
> test.c:85:50: error: ‘PSR_BTYPE_MASK’ undeclared (first use in this
> function); did you mean ‘PSR_MODE_MASK’?
>    85 |  write(1, &"00011011"[((uc->uc_mcontext.pstate & PSR_BTYPE_MASK)

> I've GCC 8 installed. I'm not expecting the errors because of a little
> older compiler. Any more ideas about the failures?

You need to run headers_install IIRC.
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